Many of the Turkic peoples have their homelands in Inner Asia, where the Turkic peoples originated from, but since then Turkic languages have spread, through migrations and conquests, to other locations including present-day Turkey. While the term Turkic' may refer to a member of any Turkic people, the term Turkish usually refers specifically to the people and language of Turkey.

The Turks in Turkey are over 60 million[11] to 70 million worldwide, while the second largest Turkic people are the Azerbaijanis, numbering 20.5 to 33 million worldwide; most of them live in northwestern Iran ("Iranian Azerbaijan") and the Republic of Azerbaijan.

The first historical text to mention the Turks was from the standpoint of the Chinese, who mentioned trade of Turk tribes with the Sogdians along the Silk Road.[12] The Xiongnu mentioned in Han Dynasty records may have been Proto-Turkic speakers,[13][14][15][16][17] followed by the Hun hordes of Attila that tried to conquer Europe.[18][19] On the other hand, recent genetics research dated 2003[20] confirms the studies indicating that the Turkic people originated from the same area and therefore are possibly related with the Xiongnu.[21]

The rock art of the Yinshan and Helanshan is dated from the 9th millennium BC to 19th century. It consists mainly of engraved signs (petroglyphs) and only minimally of painted images.[22] Ma Liqing compared the petroglyphs (which he presumed to be the sole extant example of possible Xiongnu writings), and the Orkhon script (the earliest known Turkic alphabet) recently, and argued a new connection between the two.[23]

The first recorded use of "Turk" as a political name is a sixth-century reference to the word now pronounced in Modern Chinese as Tujue. It is believed that some Turkic tribes, such as Khazars and Pechenegs, probably lived as nomads for many years before establishing a political state (Göktürk empire). Turkic peoples originally used their own alphabets, like Orkhon and Yenisey runiform, and later the Uyghur alphabet. The oldest inscription was found near the Issyk river in Kyrgyzstan and has been dated to 500 BC. The traditional national and cultural symbols of the Turkic peoples include the star and crescent, used as a symbol of Turks since pre-Islamic times[25] when they practised Shamanism; wolves, a part of Turkic mythology and tradition; as well as the color blue, iron, and fire. The turquoise blue, from the French of Turkish, is the colour of the stone turquoise still used as jewelry and a protection against evil eye.

Four hundred years after the collapse of northern Xiongnu power in Inner Asia, leadership of the Turkic peoples was taken over by the Göktürks. Formerly an element of the Xiongnu nomadic confederation, the Göktürks inherited their traditions and administrative experience. From 552 to 745, Göktürk leadership bound together the nomadic Turkic tribes into an empire, which eventually collapsed due to a series of dynastic conflicts. The great difference between the Göktürk Khanate and its Xiongnu predecessor was that the Göktürks' temporary khans from the Ashina clan were subordinate to a sovereign authority that was left in the hands of a council of tribal chiefs. The Khanate received missionaries from the Buddhists, Manicheans, and Nestorian Christians, but retained their original shamanistic religion, Tengriism. The Göktürks were the first Turkic people to write their language in a runic script.

The Turkic peoples and the related groups migrated west towards Eastern Europe, Iranian plateau and Anatolia.[26] Turks or Turkish people are among those who migrated early from what is known today as Mongolia to modern Turkey but also among the late-arrival peoples; they also participated in the Crusades.[27] After many battles they established their own state and later created the Ottoman Empire; their tactics were all-out sieges and invasions.[28]

The first known mention of the term Turk applied to a Turkic group was in reference to the Göktürks in the sixth century. A letter by the Chinese Emperor written to a Göktürk Khan named Ishbara in 585 described him as "the Great Turk Khan." The Orhun inscriptions (AD 735) use the terms Turk and Turuk.

Previous use of similar terms are of unknown significance, although some strongly feel that they are evidence of the historical continuity of the term and the people as a linguistic unit since early times. This includes a Chinese record of 1328 BC referring to a neighbouring people as Tu-Kiu.

In modern Turkey, a distinction is made between "Turks" and the "Turkic peoples" in loosely speaking: the term Türk corresponds specifically to the "Turkish-speaking" people (in this context, "Turkish-speaking" is considered the same as "Turkic-speaking"), while the term Türki refers generally to the people of modern "Turkic Republics" (Türki Cumhuriyetler or Türk Cumhuriyetleri). However, the proper usage of the term is based on the linguistic classification in order to avoid any political sense. In short, the term Turkic can be used for Turk or vice versa.[29]

According to Mahmud of Kashgar, an eleventh century Turkic scholar, and various other traditional Islamic scholars and historians, the name "Turk" stems from Tur, one of the sons of Japheth, and comes from the same lineage as Gomer (Cimmerians) and Ashkenaz (Scythians, Ishkuz) who, according to tradition, were some of the earliest Turks. For millennia, a long string of historical references specifically linked Herodotus’ Scythians with various Türkic tribes, such as the Huns, Türks, Mongols, Khazars etc. [31]. Between 400 CE and the 16th century the Byzantine sources use the name Σκΰθαι in reference to twelve different Türkic peoples [31] (most modern scholars believe these tribes to have been Iranian). A similar name, Dur, appears in mediaeval Hungarian legend as a legendary chieftain of the Caucasian Alans (Arran, Iron) whose daughters supposedly bred with the Magyar ancestors Hunor and Magor.

Alp Er Tunga is a mythical hero in Turkic tradition; the Göktürks of the sixth century carried on the tradition of Alp Er Tunga and they too had a myth according to which they themselves were descendants of a wolf.

It is generally believed that the first Turkic people were native to a region extending from Central Asia to Siberia. Some scholars contend that the Huns were one of the earlier Turkic tribes, while others support Mongolic origin for the Huns.[32] Otto Maenchen-Helfen's linguistic studies also support a Turkic origin for the Huns. [33][34] The main migration of Turks, who were among the ancient inhabitants of Turkestan, occurred in medieval times, when they spread across most of Asia and into Europe and the Middle East.[35]

The precise date of the initial expansion from the early homeland remains unknown. The first state known as "Turk", giving its name to many states and peoples afterwards, was that of the Göktürks (gok = "blue" or "celestial") in the sixth century AD. The head of the Asena clan led his people from Li-jien (modern Zhelai Zhai) to the Juan Juan seeking inclusion in their confederacy and protection from China. His tribe were famed metal smiths and were granted land near a mountain quarry which looked like a helmet, from which they were said to have gotten their name 突厥(tūjué). A century later their power had increased such that they conquered the Juan Juan and set about establishing their Gök Empire.[35]

Turkic soldiers in the army of the Abbasidcaliphs emerged as the de facto rulers of most of the Muslim Middle East (apart from Syria and Egypt), particularly after the tenth century. The Oghuz and other tribes captured and dominated various countries under the leadership of the Seljuk dynasty and eventually captured the territories of the Abbasid dynasty and the Byzantine Empire.[35]

Meanwhile, the Kyrgyz and Uyghurs were struggling with one another and with the Chinese Empire. The Kyrgyz people ultimately settled in the region now referred to as Kyrgyzstan. The Tatar peoples conquered the Volga Bulgars in what is today Tatarstan, following the westward sweep of the Mongols under Genghis Khan in the thirteenth century. The Bulgars were thus mistakenly called Tatars by the Russians. Native Tatars live only in Asia; European "Tatars" are in fact Bulgars. Other Bulgars settled in Europe in the seventh-8th centuries, and were assimilated into the Slavic population after adopting what eventually became the Slavic Bulgarian language. Everywhere, Turkic groups mixed with the local populations to varying degrees.[35] In 1090–91, the Turkic Pechenegs reached the walls of Constantinople, where Emperor Alexius I with the aid of the Kipchaks annihilated their army.[36]

As the Seljuk Empire declined following the Mongol invasion, the Ottoman Empire emerged as the new important Turkic state, that came to dominate not only the Middle East, but even southeastern Europe, parts of southwestern Russia, and northern Africa.[35]

The Mughal Empire was a Muslim empire that, at its greatest territorial extent, ruled most of the Indian subcontinent, then known as Hindustan, and parts of what is now Afghanistan and Pakistan from the early 16th to the mid-18th century. The Mughal dynasty was founded by a Chagatai Turkic prince named Babur (reigned 1526–30), who was descended from the Turkic conqueror Timur (Tamerlane) on his father's side and from Chagatai, second son of the Mongol ruler Genghis Khan, on his mother's side.[37][38] The Mughal dynasty was notable for the ability of its rulers, who through seven generations maintained a record of unusual talent, and for its administrative organization. A further distinction was the attempt of the Mughals to integrate Hindus and Muslims into a united Indian state.[37][39][40][41]

The Ottoman Empire gradually grew weaker in the face of maladministration, repeated wars with Russia and Austro-Hungary, and the emergence of nationalist movements in the Balkans, and it finally gave way after World War I to the present-day republic of Turkey.[35]

The Turkic alphabets are sets of related alphabets with letters (formerly known as runes), used for writing mostly Turkic languages. Inscriptions in Turkic alphabets were found from Mongolia and Eastern Turkestan in the east to Balkans in the west. Most of the preserved inscriptions were dated to between 8th and 10th centuries AD.

The Turkic runiform scripts, unlike other typologically close scripts of the world, do not have a uniform palaeography as, for example, have the Gothic runes, noted for the exceptional uniformity of its language and paleography. [42] The Turkic alphabets are divided into four groups, the best known of them is the Orkhon version of the Enisei group.

The various Turkic languages are usually considered in geographical groupings: the Oghuz (or Southwestern) languages, the Kypchak (or Northwestern) languages, the Eastern languages (like Uygur), the Northern languages (like Altay and Yakut), and divergent languages (like Chuvash). The high mobility and intermixing of Turkic peoples in history makes an exact classification extremely difficult.

The Turkish language belongs to the Oghuz subfamily of Turkic. It is for the most part mutually intelligible with the other Oghuz languages, which include Azeri, Gagauz, Turkmen and Urum, and to a varying extent with the other Turkic languages.

In one tradition, described in the ancient Zoroastrian text called the Zend-Avesta — similar to the biblical story of Noah — the Turkic peoples are descendants of "Tur" or "Tura", a grandson of Yima, who was the sole survivor of a catastrophe that depopulated the Earth.

The Wolf symbolizes honour and is also considered the father of most Turkic peoples. Asena (Ashina Tuwu) is the wolf mother of Tumen Il-Qağan, the first Khan of the Göktürks.

The Horse is also one of the main figures of Turkic mythology. Türks consider the horse an extension of the human, one creature.

The Dragon, also expressed as a Snake or Lizard, is the symbol of might and power. It is believed, especially in mountainous Central Asia, that dragons still live in the mountains of Tian-Shan (Tangri Tagh) and Altay. Dragons also symbolize the god Tengri (Tanrı) in ancient Turkic tradition, although dragons themselves aren't worshipped as gods.

Geser (Ges'r, Kesar) is a Tibetan/Mongolian religious epic about 'Geser' (also known as 'Bukhe Beligte') a Turkic prophet who taught Türks the new monotheistic religion Tengriism. It is unknown when he lived, and there are not many historical documents that mention him. Tengriism isn't approved by most Muslim scholars, but sura 108 of the Quran has the name Al-Kawthar,in which the word kawthar could potentially be read as 'Käusar', which may be an Arabisation of the Turkic name 'Geser'. The name of this sura is conventionally interpreted as "all goods" or "abundance", but this is not certain and many scholars have different opinions on this sura.

The legend of Timur (Temir) is the most ancient and well-known. Timur found a strange stone that fell from the sky, an iron ore meteorite. He was a smith and decided to make a sword of it. Few knew about iron in Asia before then. He tried to make a sword from it by using the usual bronzesword making process. He mentioned that this material, iron, was very easy to change and manipulate, though it was even stronger than bronze. Today, the word "temir" or "timur" means "iron". The melting process was known before in Egypt, but it wasn't used that widely in Asia, because of the very high iron price (much higher than gold) in the Mediterranian and Europe at that time.

In the Bible, Togarmah, son of Gomer, was ancestor of the Turkic-speaking peoples. His sons Ujur (Uyghur: Mongol-Turks), Tauris, Avar, Uauz (Oghuz Turks), Bizal, Tarna, Khazar, Janur, Bulgar, and Sawir (Sabir, a Turkic people, probably of Hunnic origin) are the mythical founders of tribes that once lived around the Black and Caspian Seas.

Various pre-Islamic Turkic civilizations of the sixth century adhered to shamanist and Tengriist traditions. The Shamanist religion is based on spiritual and natural elements of earth. Tengriism involves belief in Tengri as the god who ruled over the skies. Turkish: Tanrı and Azerbaijani: Tanrı remain in use by speakers of those languages as a term for God regardless of their faith.

Today, most Turks are Sunni Muslims. These include the majority of Balkan Turks, Balkars, Bashkorts, Crimean Tatars, Karachay, Kazaks, Kumuk, Kyrgyz, Nogay, Tatars (Kazan Tatars), Turkmens, Turks of Turkey, Uygurs, and Uzbeks. The Azerbaijanis of the Republic of Azerbaijan and Iranian Azerbaijan are the only major Turkic-speaking people that traditionally adhere to the Shī‘ah sect of Islam. The Qashqay nomads and Khorasani Turks as well as various Turkic tribes spread across Iran are also Shī‘ah. The Alevis of Turkey are the largest religious minority in the country. Their belief system is a branch of Twelver Shī‘ah theology.

The major Christian-Turkic peoples are the Chuvash of Chuvashia and the Gagauz (Gökoğuz) of Moldova. Many Karaim Turks of Eastern Europe are Jewish, and there are Turks of Jewish backgrounds who live in major cities such as Istanbul, Ankara and Baku. In the Siberian region, the Altay, some Tuvan and Hakas are Tengriist, having kept the original religion of Turkic peoples.[citation needed] The Yakuts of Yakutia in northeastern Siberia are traditionally Shamanists, yet many have converted to Christianity. The Sari Uygurs "Yellow Yughurs" of Western China, as well as the Tuvans of Russia are the only remaining Buddhist Turkic peoples. In addition, there are small scattered populations of Turks belonging to other religions such as the Bahá'í Faith and Zoroastrianism.

Even though many Turkic peoples became Muslims under the influence of Sufis, often of Shī‘ah persuasion, most Turkic people today are Sunni Muslims, although a significant number in Turkey are Alevis. Alevi Turks, who were once primarily dwelling in eastern Anatolia, are today concentrated in major urban centers in western Turkey with the increased urbanism.

The traditional religion of the Chuvash of Russia, while containing many ancient Turkic concepts, also shares some elements with Zoroastrianism, Khazar Judaism, and Islam. The Chuvash religious calendar cycle and the agrarian cult that it was based on combined ancestor worship and worship of earth, water and vegetation. The Chuvash converted to Eastern Orthodox Christianity for the most part in the second half of the nineteenth century. As a result, festivals and rites were made to coincide with Orthodox feasts, and Christian rites replaced their traditional counterparts. A minority of the Chuvash still profess their traditional faith.[49]

Some Turkic peoples (particularly in the Russian autonomous regions and republics of Altay, Khakassia and Tuva) are largely Tengriists. Tengriism was the predominant religion of the different Turkic branches prior to the eighth century, when the majority accepted Islam.

Traditional Inner Asian cults, commonly referred to as shamanism, survive in many places, often submerged in other religions. In post-Soviet Siberia, 300 years after their forced conversion, the Yakuts (Sakha) and others have completely rejected Orthodox Christianity in favor of a revived shamanism.[50]

Sometimes the above list is grouped into six branches: the Oghuz Turks, Kipchak, Karluk, Siberian, Chuvash, and Sakha/Yakut branches. The Oghuz have been termed Western Turks, while the remaining five, in such a classificatory scheme, are called Eastern Turks.

One of the major difficulties perceived by many who try to classify the various Turkic languages and dialects is the impact Soviet and particularly Stalinist nationality policies—the creation of new national demarcations, suppression of languages and writing scripts, and mass deportations—had on the ethnic mix in previously multicultural regions like Khwarezm, the Fergana Valley, and Caucasia. Many of the above-mentioned classifications are therefore by no means universally accepted, either in detail or in general. Another aspect often debated is the influence of Pan-Turkism, and the emerging nationalism in the newly independent Central Asian republics, on the perception of ethnic divisions.

The Turkic peoples display a great variety of ethnic types.[51] They possess physical features ranging from Caucasoid to Northern Mongoloid. Mongoloid and Caucasoid facial structure is common among many Turkic groups, such as Chuvash people, Tatars, Kazakhs, Uzbeks and Bashkirs. There has been much debate about the racial nature of the original Turkic-speaking ancestors, with some in the past presuming a "Ural-Altaic race" with Caucasoid features at one end of the spectrum and Mongoloid features at the other.

^ Nancy Touchette Ancient DNA Tells Tales from the Grave "Skeletons from the most recent graves also contained DNA sequences similar to those in people from present-day Turkey. This supports other studies indicating that Turkic tribes originated at least in part in Mongolia at the end of the Xiongnu period."

Peter B. Golden, An introduction to the history of the Turkic peoples: Ethnogenesis and state-formation in medieval and early modern Eurasia and the Middle East, (Otto Harrassowitz (Wiesbaden) 1992) ISBN 3-447-03274-X